<?php

/**
 * @package   	JCE
 * @copyright 	Copyright (c) 2009-2013 Ryan Demmer. All rights reserved.
 * @license   	GNU/GPL 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * JCE is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */
defined('_JEXEC') or die('RESTRICTED');

// load base model
require_once(dirname(__FILE__) . '/model.php');

class WFModelPreferences extends WFModel {

    protected function checkRule($rules, $action, $gid) {
        if (is_object($rules)) {
            if (isset($rules->$action)) {
                $rule = $rules->$action;
                return (isset($rule->$gid) && $rule->$gid != 0);
            }
        }

        // set Manager to false, Administrator and Super Administrator to true
        return $gid > 23;
    }

    public function getForm($group = null) {
        jimport('joomla.form.form');

        if (class_exists('JForm')) {
            JForm::addFormPath(JPATH_ADMINISTRATOR . '/components/com_jce');

            $form = JForm::getInstance('com_jce.component', 'config', array('control' => 'params'), false, '/config');

            if ($group) {
                return $form->getFieldset($group);
            }

            return $form;
        } else {
            $component = WFExtensionHelper::getComponent();
            // get params definitions
            $params = json_decode($component->params);
            $rules = isset($params->access) ? $params->access : null;

            // Build the form control.
            $curLevel = 0;

            $actions = $this->getActions();
            $groups = $this->getUserGroups();

            $tabs = array('<ul class="nav nav-tabs">');
            $content = array('<div class="tabs-content">');

            foreach ($groups as $group) {
                $difLevel = $group->level - $curLevel;
                $html = array();
                $item = new StdClass();

                $id = $curLevel;

                $tabs[] = '<li><a href="#permission-' . $id . '">' . str_repeat('<span> &rsaquo; </span> ', $curLevel = $group->level) . $group->text . '</a></li>';

                $content[] = '<div id="permission-' . $id . '" class="tab-pane">';
                $content[] = '<table border="0" cellspacing="1" class="table table-striped">';
                $content[] = '<thead>';
                $content[] = '<tr>';
                $content[] = '<th><span>' . WFText::_('WF_RULES_ACTION') . '</span></th>';
                $content[] = '<th><span>' . WFText::_('WF_RULES_SELECT_SETTING') . '</span></th>';
                $content[] = '</tr>';
                $content[] = '</thead>';
                $content[] = '<tbody>';

                foreach ($actions as $action) {
                    $content[] = '<tr>';
                    $content[] = '<td><label class="tooltip" for="' . $action->name . '_' . $group->value . '" title="' . htmlspecialchars(WFText::_($action->title) . '::' . WFText::_($action->description), ENT_COMPAT, 'UTF-8') . '">' . WFText::_($action->title) . '</label></td>';
                    $content[] = '<td>';
                    $content[] = '<select name="params[rules][' . $action->name . '][' . $group->value . ']" id="' . $action->name . '_' . $group->value . '" title="' . WFText::sprintf('WF_RULES_SELECT_ALLOW_DENY_GROUP', WFText::_($action->title), trim($group->text)) . '">';

                    $assetRule = $this->checkRule($rules, $action->name, $group->value);

                    $content[] = '<option value="1"' . ($assetRule === true ? ' selected="selected"' : '') . '>' . WFText::_('WF_RULES_ALLOWED') . '</option>';
                    $content[] = '<option value="0"' . ($assetRule === false ? ' selected="selected"' : '') . '>' . WFText::_('WF_RULES_DENIED') . '</option>';

                    $content[] = '</select>&#160; ';
                    $content[] = '</td>';
                    $content[] = '</tr>';
                }

                $content[] = '</tbody>';
                $content[] = '</table>';
                $content[] = '</div>';
            }

            $tabs[] = '</ul>';
            $content[] = '</div>';

            return implode('', array_merge($tabs, $content));
        }

        return null;
    }

    /**
     * Get Actions from access.xml file
     */
    protected function getActions() {
        $file = JPATH_COMPONENT_ADMINISTRATOR . '/access.xml';
        $xml = WFXMLElement::load($file);

        $actions = array();

        if ($xml) {
            // Iterate over the children and add to the actions.
            foreach ($xml->section->children() as $element) {
                if ($element->getName() == 'action') {
                    $actions[] = (object) array(
                                'name' => (string) $element['name'],
                                'title' => (string) $element['title'],
                                'description' => (string) $element['description']
                    );
                }
            }
        }

        return $actions;
    }

    /**
     * Get a list of the user groups.
     */
    protected function getUserGroups() {
        $db = JFactory::getDBO();

        // Initialise variables.
        $db = JFactory::getDBO();
        $query = 'SELECT a.id AS value, a.name AS text, COUNT(DISTINCT b.id) AS level, a.parent_id'
                . ' FROM #__core_acl_aro_groups AS a'
                . ' LEFT JOIN #__core_acl_aro_groups AS b ON a.lft >= b.lft AND a.rgt <= b.rgt'
                . ' WHERE a.id IN (23,24,25) AND b.id IN (23,24,25)'
                . ' GROUP BY a.id'
                . ' ORDER BY a.lft ASC'
        ;

        // Get the options.
        $db->setQuery($query);
        return $db->loadObjectList();
    }

}